eturn array Declaration options keyed by property name.
	 */
	public function get_declaration_options() {
		return $this->declaration_options;
	}

	/**
	 * Filters a CSS property + value pair.
	 *
	 * @since 6.1.0
	 * @since 7.1.0 Added the `$options` parameter.
	 *
	 * @param string $property The CSS property.
	 * @param string $value    The value to be filtered.
	 * @param string $spacer   Optional. The spacer between the colon and the value.
	 *                         Default empty string.
	 * @param array  $options  {
	 *     Optional. An array of options. Default empty array.
	 *
	 *     @type bool $important Whether to output the declaration with !important. Default false.
	 * }
	 * @return string The filtered declaration or an empty string.
	 */
	protected static function filter_declaration( $property, $value, $spacer = '', $options = array() ) {
		$filtered_value = wp_strip_all_tags( $value, true );
		if ( '' !== $filtered_value ) {
			$options = wp_parse_args(
				$options,
				array(
					'important' => false,
				)
			);

			$filtered_declaration = safecss_filter_attr( "{$property}:{$spacer}{$filtered_value}" );

			// Only append !important in the presence of an option value and when sanitization returns a single declaration.
			if ( true === $options['important'] && '' !== $filtered_declaration && ! str_contains( $filtered_declaration, ';' ) ) {
				return "$filtered_declaration !important";
			}

			return $filtered_declaration;
		}
		return '';
	}

	/**
	 * Filters and compiles the CSS declarations.
	 *
	 * @since 6.1.0
	 *
	 * @param bool $should_prettify Optional. Whether to add spacing, new lines and indents.
	 *                              Default false.
	 * @param int  $indent_count    Optional. The number of tab indents to apply to the rule.
	 *                              Applies if `prettify` is `true`. Default 0.
	 * @return string The CSS declarations.
	 */
	public function get_declarations_string( $should_prettify = false, $indent_count = 0 ) {
		$declarations_array  = $this->get_declarations();
		$declarations_output = '';
		$indent              = $should_prettify ? str_repeat( "\t", $indent_count ) : '';
		$suffix              = $should_prettify ? ' ' : '';
		$suffix              = $should_prettify && $indent_count > 0 ? "\n" : $suffix;
		$spacer              = $should_prettify ? ' ' : '';

		foreach ( $declarations_array as $property => $value ) {
			$filtered_declaration = static::filter_declaration( $property, $value, $spacer, $this->declaration_options[ $property ] ?? array() );
			if ( $filtered_declaration ) {
				$declarations_output .= "{$indent}{$filtered_declaration};$suffix";
			}
		}

		return rtrim( $declarations_output );
	}

	/**
	 * Sanitizes property names.
	 *
	 * @since 6.1.0
	 *
	 * @param string $property The CSS property.
	 * @return string The sanitized property name.
	 */
	protected function sanitize_property( $property ) {
		return sanitize_key( $property );
	}
}
this->rules_group;
	}

	/**
	 * Gets the declarations object.
	 *
	 * @since 6.1.0
	 *
	 * @return WP_Style_Engine_CSS_Declarations The declarations object.
	 */
	public function get_declarations() {
		return $this->declarations;
	}

	/**
	 * Gets the full selector.
	 *
	 * @since 6.1.0
	 *
	 * @return string
	 */
	public function get_selector() {
		return $this->selector;
	}

	/**
	 * Gets the CSS.
	 *
	 * @since 6.1.0
	 * @since 6.6.0 Added support for nested CSS with rules groups.
	 *
	 * @param bool $should_prettify Optional. Whether to add spacing, new lines and indents.
	 *                              Default false.
	 * @param int  $indent_count    Optional. The number of tab indents to apply to the rule.
	 *                              Applies if `prettify` is `true`. Default 0.
	 * @return string
	 */
	public function get_css( $should_prettify = false, $indent_count = 0 ) {
		$rule_indent                = $should_prettify ? str_repeat( "\t", $indent_count ) : '';
		$nested_rule_indent         = $should_prettify ? str_repeat( "\t", $indent_count + 1 ) : '';
		$declarations_indent        = $should_prettify ? $indent_count + 1 : 0;
		$nested_declarations_indent = $should_prettify ? $indent_count + 2 : 0;
		$suffix                     = $should_prettify ? "\n" : '';
		$spacer                     = $should_prettify ? ' ' : '';
		// Trims any multiple selectors strings.
		$selector         = $should_prettify ? implode( ',', array_map( 'trim', explode( ',', $this->get_selector() ) ) ) : $this->get_selector();
		$selector         = $should_prettify ? str_replace( array( ',' ), ",\n", $selector ) : $selector;
		$rules_group      = $this->get_rules_group();
		$has_rules_group  = ! empty( $rules_group );
		$css_declarations = $this->declarations->get_declarations_string( $should_prettify, $has_rules_group ? $nested_declarations_indent : $declarations_indent );

		if ( empty( $css_declarations ) ) {
			return '';
		}

		if ( $has_rules_group ) {
			$selector = "{$rule_indent}{$rules_group}{$spacer}{{$suffix}{$nested_rule_indent}{$selector}{$spacer}{{$suffix}{$css_declarations}{$suffix}{$nested_rule_indent}}{$suffix}{$rule_indent}}";
			return $selector;
		}

		return "{$rule_indent}{$selector}{$spacer}{{$suffix}{$css_declarations}{$suffix}{$rule_indent}}";
	}
}